Recursive Function: Factorial: Part 4: C++ Console Application

Doing Factorial in C++ for Console Application

Factorial.h

#ifndef FACTORIAL_H #define FACTORIAL_H #pragma once   class Factorial {        public:               Factorial();               int fact(int n);               ~Factorial(void); }; #endif

Factorial.cpp

#include "StdAfx.h" #include "Factorial.h"   Factorial::Factorial()     // constructor { }   int Factorial::fact(int n) {        if (n == 0)        {               return 1;        }        else        {               return n * fact(n-1);        } }   Factorial::~Factorial() { }

Recursion.cpp

// Recursion.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <iostream> #include <string> #include "Factorial.h" using namespace std;   int _tmain(int argc, _TCHAR* argv[]) {        Factorial f;  //created object of Factorial          // calculate and print "3!"        cout << f.fact(3) << endl;        return 0; }

Console output